Huawei Technologies ODU3601C-1900 CDMA Base Station User Manual Reflection

Huawei Technologies Co.,Ltd CDMA Base Station Reflection

Users Manual 7

User Manual iSiteC ODU3601C CDMA Soft Base Station BTS MaintenanceAppendix B Return Loss, VSWR and Reflection Coefficient B-1 Appendix B Return Loss, VSWR and Reflection Coefficient Return loss (dB) Voltage Standing Wave Ratio (VSWR) Reflection coefficient Γ 4 4.41943 0.63096 5 3.56977 0.56234 6 3.00952 0.50119 7 2.61457 0.44668 8 2.32285 0.39811 9 2.09988 0.35481 10 1.92495 0.31623 11 1.78489 0.28184 12 1.6709 0.25119 13 1.57689 0.22387 14 1.49852 0.19953 15 1.43258 0.17783 16 1.37668 0.15849 17 1.32898 0.14125 18 1.28805 0.12589 19 1.25276 0.1122 20 1.22222 0.1 21 1.19569 0.08913 22 1.17257 0.07943 23 1.15238 0.07079 24 1.13469 0.0631 25 1.11917 0.05623 26 1.10553 0.05012 27 1.09351 0.04467 28 1.08292 0.03981 29 1.07357 0.03548 30 1.06531 0.03162 31 1.058 0.02818 32 1.05153 0.02512 33 1.0458 0.02239 34 1.04072 0.01995 35 1.03621 0.01778 36 1.03221 0.01585 37 1.02866 0.01413 38 1.0255 0.01259 39 1.0227 0.01122 40 1.0202 0.01 41 1.01799 0.00891 42 1.01601 0.00794 43 1.01426 0.00708 44 1.0127 0.00631 45 1.01131 0.00562 46 1.01007 0.00501 47 1.00897 0.00447 48 1.00799 0.00398 49 1.00712 0.00355 50 1.00634 0.00316
User Manual iSiteC ODU3601C CDMA Soft Base Station BTS MaintenanceAppendix B Return Loss, VSWR and Reflection Coefficient B-2 The calculation formulas for reflection coefficient Γ, return Loss (RL), and VSWR are displayed in the following table: Reflection coefficient Γ VSWR Return loss (dB) Γ=UreflectedUforward VSWR=Uforward+UreflectedUforward Ureflected RL=UforwardUreflected20lg Γ=1alg( )RL20 VSWR=1+Γ1−Γ RL=1Γ20lg Γ=VSWR−1VSWR+1 VSWR =alg( )RL20 −1alg( )RL20 +1 RL=VSWR+1VSWR−120lg In the above formulas, Uforward stands for forward voltage and Urelected for reverse voltage.

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